Analysis

  • max time kernel
    105s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29-01-2023 19:22

General

  • Target

    31b23dde77ac6445e7d3f70671c8236527f321449b3c8203755e6c1c2606f4af.xls

  • Size

    36KB

  • MD5

    ee94e295617632aaa2bf45222eaa5713

  • SHA1

    6c216da85675df42db21718c37444e42b4507147

  • SHA256

    31b23dde77ac6445e7d3f70671c8236527f321449b3c8203755e6c1c2606f4af

  • SHA512

    3bd0eb7ff8bdcd73308acb18840f53fd6ae823b17bfbd2f9f7c2c352019888b5252d4fcd3d6a8d370dd32ddb6fddc8426c7dd2a2a08a16e88ad1615176622efd

  • SSDEEP

    768:KPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJmchxCJq4ZDe2XBc2LorrL:eok3hbdlylKsgqopeJBWhZFGkE+cL2NY

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://markens.online/wp-data.php

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\31b23dde77ac6445e7d3f70671c8236527f321449b3c8203755e6c1c2606f4af.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\yI8srK0l.txt,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      PID:1088

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1088-60-0x0000000000000000-mapping.dmp
  • memory/1284-54-0x000000002F341000-0x000000002F344000-memory.dmp
    Filesize

    12KB

  • memory/1284-55-0x0000000070E11000-0x0000000070E13000-memory.dmp
    Filesize

    8KB

  • memory/1284-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1284-57-0x0000000071DFD000-0x0000000071E08000-memory.dmp
    Filesize

    44KB

  • memory/1284-58-0x0000000075931000-0x0000000075933000-memory.dmp
    Filesize

    8KB

  • memory/1284-59-0x0000000071DFD000-0x0000000071E08000-memory.dmp
    Filesize

    44KB

  • memory/1284-62-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1284-63-0x0000000071DFD000-0x0000000071E08000-memory.dmp
    Filesize

    44KB